OUISTREHAM, France — The American, Russian and incoming Ukrainian presidents spoke face-to-face about ending Ukraine’s violence, a diplomatic turning point that played out Friday along the beaches where the Allies battled for Europe’s peace 70 years earlier.

The Kremlin said Russian President Vladimir Putin and the Ukrainian president-elect, Petro Poroshenko, called for the “soonest end to bloodshed in southeastern Ukraine and combat by both parties, the Ukrainian armed forces and supporters of the federalization of Ukraine,” in a statement carried by Russian news wires.